IOWA CITY, Iowa -- It's been a harsh winter on Iowa roadways, and Interstate 80 is starting to show signs of it.

Cable barriers stretching from Iowa City to West Branch are destroyed, and in many places they've been completely smashed.

Tuesday morning, another crash shut down portions of the interstate near West Branch. Witnesses say three semi-trailer trucks crashed, causing delays for travelers in westbound lanes. Another crash was reported around 10:30 a.m. when a semi flipped over in the eastbound lanes of Interstate 80 in Cedar County. Hazmat crews were called to help clean-up diesel fuel.

On Saturday a 30-car pile-up shutdown the eastbound lanes of Interstate 80 from Dubuque Street to Iowa City for several hours. No major injuries were reported in the crash, but a state trooper did receive bumps and bruises after his car was hit.

Trooper Bob Conrad of the Iowa State Patrol said Tuesday morning that drivers need to slow down, particularly in bad weather.

"We really want to get that message out there," Conrad said.

It's not clear how much repair work to the interstate cable barriers will cost. Dozens of cars also remain in ditches along I-80 and in other places throughout Eastern Iowa.